Coaly activated carbon rotary kiln inner container and modular structure and assembling method thereof

Abstract

The invention discloses a coal activated carbon rotary kiln inner container and a modular structure and an assembly method thereof, and overcomes the defects that an existing rotary kiln inner container is prone to deformation, waste gas is prone to accumulation, and activation is affected. The modular structure comprises a central pipe, a plurality of stirring blades, at least one connecting hoop, a fastener and at least one exhaust hole, the modular structure of the rotary kiln inner container comprises a stirring assembly and a tightening assembly, and a method for assembling the modular structure comprises the steps that the tightening assembly and the stirring assembly are sequentially connected at intervals in the axial direction of the central pipe; according to the invention, the structure is stable, the service life is long, the exhaust is smooth, the reaction is sufficient, the modular design is realized, the implementation is convenient, the connection is reliable, the connection strength between the end part of the stirring blade and the connecting hoop as well as between the root part of the stirring blade and the central pipe is enhanced by the supporting plate and the connecting strip, and the service life of the stirring blade is prolonged. And the whole liner structure is firmer and more durable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of activated carbon production equipment, in particular to a rotary kiln liner for coal-based activated carbon production, and more particularly to a liner structure with enhanced mixing and stable fixing functions and a modular implementation scheme thereof. BACKGROUND

[0002] The rotary kiln is a key equipment in the production process of coal-based activated carbon, which is used for heat treatment processes such as carbonization and activation of materials. In order to improve the processing efficiency and product quality, a liner is usually arranged inside the rotary kiln to turn the materials through the mixing structure on the liner, so that the materials are evenly heated.

[0003] The existing rotary kiln liner mostly adopts a structure of a central shaft cooperating with stirring blades. However, in actual application, this structure has some defects: first, the long stirring blades are prone to bending or deformation under the rotation of the rotary kiln and the impact of the materials, which leads to a decrease in the mixing effect and even scratching with the inner wall of the kiln body; second, the traditional liner is mostly a whole welded structure, which is very inconvenient for manufacturing, transportation and installation, especially when the kiln body is long, the whole hoisting and positioning is extremely difficult; third, the waste gas generated during the material processing process is easily accumulated in the area between the stirring blades and the kiln wall, which affects the smooth progress of the activation reaction.

[0004] Therefore, there is an urgent need for a rotary kiln liner that is structurally stable, easy to manufacture and install, and can timely exhaust waste gas. SUMMARY

[0005] The present application aims to overcome the shortcomings of the prior art and provide a coal-based activated carbon rotary kiln liner that is structurally stable, has good mixing effect and is easy to exhaust.

[0006] Another object of the present application is to provide a modular structure of the above-mentioned rotary kiln liner to solve the problem of difficult manufacturing, transportation and installation of long-size liners.

[0007] To achieve the above-mentioned objects, the present application adopts the following technical solutions:

[0008] In a first aspect, the present application provides a coal-based activated carbon rotary kiln liner arranged in a rotary kiln body, which comprises:

[0009] a central pipe arranged along the axis direction of the rotary kiln body;

[0010] a plurality of stirring blades arranged on the outer wall of the central pipe in the circumferential and axial directions;

[0011] at least one connecting hoop sleeved on the outer periphery of the plurality of stirring blades and connecting the end portions of the stirring blades into one body;

[0012] Fasteners are inserted through holes provided on the connecting hoop to secure the connecting hoop to the inner wall of the rotary kiln body;

[0013] At least one exhaust port is provided on the wall of the central tube for discharging waste gas from the area between the stirring blades and the inner wall of the rotary kiln body.

[0014] Furthermore, a support plate is provided between the end of the stirring blade and the inner surface of the connecting hoop to enhance the support contact area and improve structural stability.

[0015] Furthermore, the insertion hole is a through hole, which is opened from the outer surface of the connecting hoop and extends through to the support plate, so that the fastener can lock the connecting hoop and the support plate at the same time, making the fixation more secure.

[0016] Furthermore, a connecting strip is provided between the stirring blade and the outer wall of the central tube to strengthen the connection at the root of the stirring blade and prevent it from falling off the central tube.

[0017] Furthermore, a clamping clamp is provided between the connecting hoops, and a gap is provided between the clamping clamp and the rotary kiln body. The clamping clamp locks and fixes the ends of the plurality of stirring blades through a locking mechanism. This structure allows the clamping clamp to contract to a certain extent when locking, thereby tightly clamping the ends of all the stirring blades.

[0018] Secondly, the present invention provides a modular structure for the rotary kiln liner described above, wherein the rotary kiln liner is assembled from multiple prefabricated modules. The prefabricated modules include two types:

[0019] The stirring assembly includes a central tube section and several stirring blades disposed on the outer periphery of the central tube section;

[0020] The clamping assembly includes a central tube section, several stirring blades disposed on the outer periphery of the central tube section, and a connecting clamp sleeved on the ends of the stirring blades and fixed to the inner wall of the rotary kiln body by fasteners.

[0021] Furthermore, the stirring assembly and the clamping assembly are alternately connected along the axial direction of the central tube, thereby forming multiple stable support points along the entire length of the inner liner.

[0022] Furthermore, in both the stirring assembly and the clamping assembly, a connecting strip can be provided between the stirring blade and the outer wall of the central tube to uniformly strengthen the root strength of all stirring blades.

[0023] Furthermore, in the clamping assembly, a support plate is provided between the end of the stirring blade and the connecting clamp.

[0024] Thirdly, the present invention provides a method for assembling the above-mentioned modular structure, comprising the following steps:

[0025] a. Connect the clamping assembly and the stirring assembly sequentially and at intervals along the axial direction of the central tube;

[0026] b. Adjust the number of stirring components and / or the length of the central tube according to the actual depth of the rotary kiln body;

[0027] c. Ensure that the assembled inner liner has at least one clamping assembly with a clamping clamp.

[0028] Beneficial effects

[0029] Compared with the prior art, the present invention has the following significant advantages:

[0030] 1. Sturdy structure and long service life: The dispersed mixing blade ends are connected into a whole by connecting hoops (especially clamping hoops) and fixed to the inner wall of the kiln by fasteners, which greatly enhances the overall rigidity and anti-deformation ability of the inner liner, effectively prevents the mixing blades from bending and shaking, and extends the service life of the equipment.

[0031] 2. Smooth exhaust and full reaction: The exhaust hole on the central tube can promptly discharge the waste gas accumulated between the stirring blade and the kiln wall, improve the kiln atmosphere, facilitate the full carbonization and activation reaction, and improve the quality of activated carbon products.

[0032] 3. Modular design for easy implementation: The long inner liner is broken down into standardized mixing and clamping components, enabling modular production. This results in higher manufacturing precision, lower transportation costs, and more flexible and faster on-site installation. It can easily adapt to rotary kilns of different lengths, significantly reducing manufacturing and maintenance costs.

[0033] 4. Reliable connection: By setting up a support plate and connecting strip, the connection strength between the end of the stirring blade and the connecting hoop, and between the root of the stirring blade and the central tube are strengthened respectively, making the entire inner tank structure more robust and durable. Attached Figure Description

[0034] Figure 1 This is a three-dimensional structural schematic diagram of Embodiment 1 of the rotary kiln liner of the present invention;

[0035] Figure 2 This is a front view schematic diagram of the rotary kiln inner liner of Embodiment 1 of the present invention;

[0036] Figure 3 This is a schematic diagram of the left side of the rotary kiln inner liner of Embodiment 1 of the present invention;

[0037] Figure 4 This is a three-dimensional structural schematic diagram of the modular stirring assembly of Embodiment 1 of the rotary kiln inner liner of the present invention;

[0038] Figure 5This is a front view schematic diagram of the modular structure stirring assembly of Embodiment 1 of the rotary kiln inner liner of the present invention;

[0039] Figure 6 This is a side view of the modular structure stirring assembly of Embodiment 1 of the rotary kiln liner of the present invention;

[0040] Figure 7 This is a three-dimensional structural schematic diagram of the modular structure clamping assembly of Embodiment 1 of the rotary kiln liner of the present invention;

[0041] Figure 8 This is a side view of the modular structure clamping assembly of Embodiment 1 of the rotary kiln liner of the present invention;

[0042] Figure 9 This is a front view schematic diagram of the modular structure clamping assembly of Embodiment 1 of the rotary kiln liner of the present invention; Figure 10 This is a three-dimensional structural schematic diagram of the central tube of Embodiment 1 of the rotary kiln liner of the present invention;

[0043] Figure 11 This is a three-dimensional structural schematic diagram of Embodiment 2 of the rotary kiln liner of the present invention;

[0044] Figure 12 This is a front view schematic diagram of the rotary kiln inner liner of embodiment 2 of the present invention;

[0045] The following are the labels in the diagram: 1. Central tube; 2. Agitator blade; 3. Connecting hoop; 4. Support plate; 5. Connecting strip; 6. Insertion hole; 7. Clamp; 8. Vent hole; 9. Agitator assembly; 10. Tightening assembly. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0047] like Figures 1-10 The diagram shown is a schematic representation of an embodiment 1 of the rotary kiln liner for coal-based activated carbon according to the present invention. The rotary kiln liner is disposed inside the rotary kiln body (not shown in the figure). The core of the liner includes a central tube 1 extending along the axis of the rotary kiln. On the outer wall of the central tube 1, a plurality of stirring blades 2 are welded at uniform intervals along its circumference and axial direction for turning the material when the rotary kiln rotates.

[0048] To enhance the stability of the overall structure, one or more connecting hoops 3 are fitted onto the ends of the stirring blades 2. In this embodiment 1, in addition to the connecting hoops 3, a clamping hoop 7 without insertion holes 6 is also provided. It tightly clamps the ends of all surrounding stirring blades 2 through its own locking mechanism (such as bolts), forming a sturdy external frame. A support plate 4 is also welded between the end of the stirring blade 2 and the inner surface of the connecting hoops 3 to increase the stress-bearing area. Fasteners (such as anchor bolts) are inserted from the outer wall of the rotary kiln body into the insertion holes 6 on the connecting hoops 3. The insertion holes 6 are preferably through holes that extend to the support plate 4. The fasteners abut against the support plate 4, thereby firmly fixing the connecting hoops 3 and the support plate 4 together to the rotary kiln body.

[0049] In addition, a rectangular connecting strip 5 is welded between the root of the stirring blade 2 and the outer wall of the central tube 1 to reinforce the root of the stirring blade 2 and prevent it from cracking due to long-term stress. Several exhaust holes 8 are provided on the wall of the central tube 1 to guide the waste gas generated by the material reaction from the area between the stirring blade 2 and the kiln wall to the inside or outside of the central tube 1, ensuring a stable atmosphere inside the kiln.

[0050] like Figures 4-9 As shown, to achieve modularity, the entire inner liner is designed to be assembled from two prefabricated modules: a stirring assembly 9 and a clamping assembly 10. The stirring assembly 9 ( Figures 4-6 It consists of a short central tube 1 connected by a connecting strip 5 and a stirring blade 2 thereon. The clamping assembly 10 ( Figures 7-9 It also consists of a short central tube 1 connected by a connecting strip 5 and a stirring blade 2, but it also includes a connecting clamp 3, a support plate 4 and other fixing structures. The ends of the central tube 1 of each module can be designed as flanges or sleeve plug-in structures to facilitate quick docking on site.

[0051] During assembly, multiple agitator components 9 and clamping components 10 are arranged and connected alternately along the axial direction according to the length of the rotary kiln (for example, in the order of "clamping component - agitator component - clamping component - agitator component - ... center tube - center tube"). By adjusting the number of agitator components 9, different kiln lengths can be flexibly accommodated. Finally, ensure that at least one clamping component 10 is fixed to the inner wall of the kiln with fasteners to complete the installation of the entire inner liner.

[0052] like Figures 11-12The diagram shows a schematic representation of an embodiment 2 of the rotary kiln liner for coal-based activated carbon according to the present invention. The rotary kiln liner is disposed inside the rotary kiln body (not shown in the figure). The core of the liner includes a central tube 1 extending along the axis of the rotary kiln. On the outer wall of the central tube 1, a plurality of stirring blades 2 are welded at uniform intervals along its circumference and axial direction for turning the material when the rotary kiln rotates. Unlike the embodiment, when the stirring assembly 9 and the clamping assembly 10 are connected, polygonal connecting blocks are provided on the central tube 1 and the stirring blades 2 to increase the connection length and meshing pairs, so that the connection between each section is tight. The length of the central tube 1 is longer than that of embodiment 1.

[0053] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A rotary kiln liner for coal-based activated carbon, disposed within the main body of the rotary kiln, characterized in that, include: The central tube (1) is arranged along the axial direction of the rotary kiln body; Multiple stirring blades (2) are arranged at intervals along the circumference and axial direction of the central tube (1) on its outer wall; At least one connecting hoop (3) is fitted around the outer periphery of the plurality of stirring blades (2) and connects the ends of the stirring blades (2) into one piece; Fasteners are inserted through the insertion holes (6) provided on the connecting hoop (3) to fix the connecting hoop (3) to the inner wall of the rotary kiln body; At least one exhaust port (8) is provided on the wall of the central pipe (1) for discharging exhaust gas from the area between the stirring blade (2) and the inner wall of the rotary kiln body.

2. The rotary kiln liner according to claim 1, characterized in that, A support plate (4) is also provided between the end of the stirring blade (2) and the inner surface of the connecting hoop (3).

3. The rotary kiln liner according to claim 2, characterized in that, The insertion hole (6) is a through hole, which is opened from the outer surface of the connecting hoop (3) and extends through to the tray (4).

4. The rotary kiln liner according to claim 1, characterized in that, A connecting strip (5) is also provided between the stirring blade (2) and the outer wall of the central tube (1).

5. The rotary kiln liner according to claim 1, characterized in that, A clamp (7) is also provided between the connecting hoops (3). The clamp (7) has a gap with the rotary kiln body and locks the ends of the multiple stirring blades (2) through a locking mechanism.

6. A modular structure for a rotary kiln liner as described in any one of claims 1-5, characterized in that, The rotary kiln liner is assembled from multiple prefabricated modules, the prefabricated modules including: The stirring assembly (9) includes a central tube (1) and several stirring blades (2) disposed on the outer periphery of the central tube (1); The clamping assembly (10) includes a central tube section (1), a plurality of stirring blades (2) disposed on the outer periphery of the central tube section (1), and a connecting clamp (3) sleeved on the end of the stirring blades (2) and fixed to the inner wall of the rotary kiln body by fasteners.

7. The modular structure according to claim 6, characterized in that, The stirring assembly (9) and the clamping assembly (10) are alternately connected along the axial direction of the central tube (1).

8. The modular structure according to claim 6, characterized in that, A connecting strip (5) is also provided between the stirring blade (2) and the outer wall of the central tube (1).

9. The modular structure according to claim 6, characterized in that, In the clamping assembly (10), a support plate (4) is provided between the end of the stirring blade (2) and the connecting clamp (3).

10. A method for assembling a modular structure as described in any one of claims 6-9, characterized in that, Includes the following steps: a. Connect the clamping assembly (10) and the stirring assembly (9) sequentially at intervals along the axial direction of the central tube (1); b. Adjust the number of stirring components (9) and / or the length of the central tube (1) according to the actual depth of the rotary kiln body; c. Ensure that the assembled inner liner has at least one clamping assembly (10) of clamping (7).

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